Tomei will portray a novelist married to the nephew of Lithgow’s character. Lithgow moves in with her family after he’s forced to sell his small apartment. Shooting will start this month in New York City.

Ira Sachs is directing and producing “Love Is Strange,” along with Parts and Labor partners Lars Knudsen and Jay Van Hoy, Lucas Joaquin and Jayne Baron Sherman. Mauricio Zacharias is the co-screenwriter along with Sachs.

Fortissimo Films is handling international sales.

Tomei is repped by Chris Andrews at CAA and Jason Weinberg at Untitled.